These problems are very often caused by dandruff. As your scalp becomes irritated by the dandruff-causing microbe, Malassezia globosa, your scalp responds not just by flaking but can become itchy and dry too.

Itchy scalp
Research shows itching is actually the most common and most uncomfortable side effect of dandruff.

As your scalp becomes irritated, it starts to feel itchy. And of course, your immediate reaction is to scratch.

But scratching can damage an already delicate scalp, leading to more irritation, so it becomes a vicious cycle.